Gustave Flaubert said this quote

I believe in Supreme Being, a Creator, whoever he may be, it's of no importance to me, who put us here on earth to do our duty as citizens and fathers; but I don't need to go to church and kiss silver platters and dig into my pocket to fatten up a lot of humbugs who eat better than you or I do! Because he can be worshiped just as well in a wood, a field, or even just gazing at the ethereal vault, like the ancients.